curl --request POST \
  --url https://api.byblend.com/api/v1/prescribers/{prescriber_id}/supervisors \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
  "supervisor_id": "0227d1e5-ba9a-42b5-8fe2-38882aa65708",
  "state": "CA"
}'

{
  "id": "0227d1e5-ba9a-42b5-8fe2-38882aa65708",
  "created_at": "2025-03-15T12:00:00Z",
  "updated_at": "2025-03-15T12:00:00Z",
  "supervisor": {
    "id": "0227d1e5-ba9a-42b5-8fe2-38882aa65708",
    "first_name": "Willard",
    "last_name": "Donnelly",
    "npi": "1234567890"
  },
  "supervisee": {
    "id": "0227d1e5-ba9a-42b5-8fe2-38882aa65708",
    "first_name": "Willard",
    "last_name": "Donnelly",
    "npi": "1234567890"
  }
}